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No. 752,524. PATENTED FEB. 16, 1904.

- E. H. GOWART.

SAFETY TURNBUGKLE.

APPLIOATION FILED FEB. 19, 1903.

10 MODEL.

WITNESSES: m) VENIOH DJ 1 J J J J J:

Patented February 16, 1904.

UNITED STATES PATENT OFFICE.

ELIAS H. COWART, OF PLEASANTON, CALIFORNIA.

SAFETY-TURNBUOKLE.

SPECIFICATION forming part of Letters Patent No. 752,524, dated February16, 1904. Application filed February 19, 1903. Serial No. 144,159. (Nomodel.)

To all whom it may concern.-

Be it known that I, ELIAs COWART, a citizen of the United States,residing at Pleasanton, in the county of Alameda and State ofCalifornia, have invented certain new and useful Improvements inSafety-Turnbuckles; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My present invention is an improvement in turnbuckles which are linksused for setting up and tightening rods or stays employed usually inmarine construction. To be more specific, however, my invention is asafetyturnbuckle, which as the name signifies is designed to add theadditional feature of securityand safety to requisites of theordinaryturnbuckle. It is a well-known fact among those familiar with the actionof this class of devices that after the buckle is set uptight theconstant tension of the tightened rods will device this accidentalloosening is absolutely prevented and the parts once set up are heldrelatively stationary. I have not overlooked the requisites of strengthand durability nor the matter of economy and simplicity of construction.V

I am enabled to accomplish the above results by the means illustrated inthe accompanying drawings, in which Figure 1 is a perspective view ofthe complete buckle, showing the relative positions of the partsof myimprovement. Fig. 2 is a transverse section taken in the direction ofthe arrows in Fig. 1.

I will now set forth the general construction of my invention andsubsequently explain the operation of the same, reference being had tothe above views by letter.

The main link A of the buckle is formed in the usual manner with theright-hand and lefthand threaded terminals B and C and the parallelconnecting-bars D and E. The inner extremities of the rods F and Gr,which engage the threads in terminals B and C, are out down to a squarecross-section. Formed with perforations to engage each of the squaredends of rods F and Gr are the twin plates H and I, their diametricallyopposite ends being notched to receive and slide on bars D and E. Now itwill be seen from the above description that after the buckle has beenset up until the rods F and G are taut and the plates H and I are movedalong the bars D and E until they engage with the squared end of therods the buckle and rods are held relatively stationary and anyaccidental loosening absolutely prevented. When it is desired to loosenthe buckle, the split pins a and b, which are provided to hold plates Hand I in place, are removed and the plates drawn from the rods.

In order to permit the plates H and I being placed between the bars Dand E, I have cut the grooves in the plates sufliciently deep, as shownin Fig. 2, to allow'the canting of plate sufficient to pass the bars.

By the improved construction herein shown and described I am enabled tomanufacture and place on the market a simple and positively secureturnbuckle at a moderate cost, and thus to meet the demands of thetrade.

I am aware that changes in the form and proportion of parts of thedevices herein shown and described as an embodiment of my invention canbe made without departing from the spirit or sacrificing the advantagesthereof, and I therefore reservethe right to make such changes, fairlyfall within the scope of my invention.

What I claim, and desire to secure by Letters Patent, is-

A turnbuckle formed with parallel bars connecting the oppositeright-hand and left-hand threaded members thereof, oneor more memberssituated between said bars and having their opposite edges notched toreceive said bars, said members being formed with central squareperforations, and opposite rods to engage the threads of said buckle andhaving their inner ends formed to enter said perforations, said notchedmembers being arranged to slide on said parallel bars substantially asand for the purpose set forth.

In testimony whereof I afiix my signature in presence of two witnesses.

' ELIAS H. COI/VART.

Witnesses:

FRANK M. WILLS, J. N. AEENDT.

substitutions, and alterations as

